Lightning (connector)
Altitude (triangle)
Flash (photography)
Elevation (ballistics)
Effects of high altitude on humans
Ground level
Meteorology
Upper-atmospheric lightning
Lightning detection
Environmental science
Remote sensing
Atmospheric sciences
Geography
Lightning strike
Geology
Thunderstorm
Physics
Mathematics
Optics
Engineering
Astronomy
Architectural engineering
Ground floor
Power (physics)
Geometry
Quantum mechanics
